I've definitely been meaning to upgrade her tub for a while (finals week next week, UGH,) so I'll see about doing that tomorrow after school. Glad I'm not alone in thinking it's a regurge! It was the rat's first time being thawed, and I was forced to leave it over night due to running out of time. I've fed off rats after an over-night thaw on their first run without any problems before, so hopefully(?) this is just one of those days.